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Finding the Fourth Proportional to 225,879.66, 311,661.63 and 135,201.17

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Solution

The fourth proportional to 225,879.66, 311,661.63 and 135,201.17 is: 186,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,879.66 : 311,661.63 = 135,201.17 : x
  2. Step 2: Convert to fraction form
    225,879.66/311,661.63 = 135,201.17/x
  3. Step 3: Cross multiply
    225,879.66x = 311,661.63 × 135,201.17
  4. Step 4: Simplify right side
    225,879.66x = 42,137,015,461.80
  5. Step 5: Solve for x
    x = 42,137,015,461.80/225,879.66
  6. Step 6: Final answer
    x = 186,546.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.